Polk Audio - CSi A4 - Centre Speaker
CSI A4 Features:
The proprietary curved, 6-layer DAHLI enclosure design creates the optimal shear damping for a more rigid, acoustically inert enclosure and minimal cabinet resonances. CSi A4 cabinets are designed for clean, accurate sound. Klippel motor optimisation uses laser measurement technology to ensure a smooth excursion path at either end of the volume spectrum for uniform performance at both low and high volumes. Polk’s proprietary, patented Dynamic Balance technology allows our engineers to design out distortion-causing driver and system resonances, so you only hear the good sounds. Durable, computer-modelled, injection-molded butyl rubber surrounds suppress unwanted cone resonances for a lifetime of reliable sound. The RTiA Cascade Tapered Crossover eliminates the comb filtering and beaming, common to multi-driver speakers, which degrades the quality of the audio and collapses the soundstage. Patented Acoustic Resonance Control® (ARC) technology suppresses cabinet resonance that causes distortion to ensure clear and natural sound. Beautiful curved furniture-grade hardwood veneer cabinet finishes, with sleek trim accents in black or cherry. Computer-modeled anti-diffraction grilles enhance the good looks while minimising sonic interference. All Polk loudspeakers are timbre-matched within their series, designed with the same components throughout, to achieve seamless speaker-to-speaker blending effects in multi-channel systems. Gold-plated, professional-style 5-way binding posts, for the most secure connection options. All Polk products are made using the best materials and the most advanced manufacturing techniques. They pass the industry’s most exhaustive quality tests, including drop testing, extreme signal response and UV & salt exposure testing. Polk loudspeakers are built to perform for a lifetime.
Technical Specifications Driver Complement Tweeter Quantity: 1 Diameter: 2.54cmType: Dynamic Balance silk polymer dome tweeters MIDRANGE Quantity: 2 Diameter: 13.34cmType: Dynamic Balance drivers with polymer composite cones and rubber surrounds ELECTRICALTotal Frequency Response: 55Hz-27kHz Upper -3dB Limit: 26 kHzLower -3dB Limit: 65 HzNominal Impedance: 8 ohmsEfficiency: 89 dB Recommended Amplifier Power: 20-180 watts per channelInputs: 5-way binding postsDIMENSIONSHeight: 17.46cmWidth: 50.80cmDepth: 22.23cmProduct Weight (each): 7.03 Kg